Cannot load rJava | unable to load shared object rJava.so about rjava HOT 3 CLOSED

The error typically means that your R is not configured properly for your JVM location. Since you are using 3rd party distribution of R, please contact Microsoft for support.

In regular R you would use R CMD javareconf to make sure R is configured for your Java. In technical terms, R records the location of Java in $R_HOME/etc/ldpaths so if your R is configured properly you will see Java included in LD_LIBRARY_PATH, e.g.:

> Sys.getenv("LD_LIBRARY_PATH")
[1] "/usr/R/devel/lib:/usr/lib/x86_64-linux-gnu:/usr/lib/jvm/java-11-openjdk-amd64/lib/server"

The path containing libjvm.so must be listed there. If you don't see your JDK there then your R is not properly configured.

from rjava.

Thanks for replying.

I have already run R CMD javareconf before installation, and I think it sets everything up appropriately.

Sys.getenv("LD_LIBRARY_PATH")
[1] "/opt/microsoft/ropen/4.0.2/lib64/R/lib:/lib:/builddir/vendor/build/lib:/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.41.x86_64/jre/lib/amd64/server"

I found this response in stackoverflow but not sure if it's relevant to this error or not? This seems to be an RStudio thing, but I get the same error when trying to load rJava at CLI.

from rjava.

I had to stop and start RStudio session after running that R CMD javareconf for things to get completely effective.

sudo systemctl stop rstudio-server
sudo systemctl start rstudio-server

Thanks for the hints @s-u

from rjava.